摘要
噪声中的瞬态信号检测在雷达信号处理领域占据非常重要的地位。本文利用小波变换的性质，提出一种改进的Ｍｏｒｌｅｔ小波的瞬态信号检测算法。该算法在Ｍｏｒｌｅｔ小波基础上引进了线性变换的调频系数以提高小样本超宽带信号检测的检测精度。对实际实验数据及仿真信号的检测结果表明，该方法在低信噪比小样本情况下，对瞬态超宽带信号具有很好的检测性能。
Detecting transient signal in noise plays an important role in the area of radar signal processing. Using the properties of wavelet transform, this paper proposes an improved Morlet wavelet transform algorithm. It introduces the frequency modulated coefficients to increase the precision of detection on few samples ultra wide band (UWB) signals. The detection results of simulated signals and real experiment data show that, the algorithm has perfect performance on transient UWB signal detection under the situation of low signal to noise ratio and few samples.
出处
《系统工程与电子技术》
EI
CSCD
1998年第6期44-48,共5页
Systems Engineering and Electronics
关键词
信号检测
瞬态响应特性
测量
宽带通信
雷达
Wavelet detection, Transient signal, Ultra wide band(UWB) signal, Morlet wavelet transform.
